We need to graph ⇒⇒⇒ f(x) = - 0.25 x + 4
the given equation represents a linear equation, we need just 2 points to graph it
At x = 0 ⇒⇒⇒ f(x) = -0.25 * 0 + 4 = 4
At x = 4 ⇒⇒⇒ f(x) = -0.25 * 4 + 4 = 3
The attached figure represents the table and the graph of the given function.